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Consider the following statement for a 2-port network
1. Z11 =Z22
2. h12 = h21
3.Y12 = -Y21
4.BC - AD = -1
then the network is reciprocal if and only if
(A) 1 and 2 are correct (B) 2 and 3 are correct (C) 3 and 4 are correct (D) 4 alone is correct.
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